92mm Rotational Speed (+/- 10%) 1600 RPM Rotational Speed with L.N.A. (+/- 10%) 1300 RPM Rotational Speed with U.L.N.A. (+/- 10%) 1000 RPM SSO Acoustical Noise 17.6 dB(A) Acoustical Noise with L.N.A. 13.1 dB(A) Acoustical Noise with U.L.N.A. 7.9 dB(A)